The Theory and Practice of Technical Writing by Samuel Chandler EarleThe Theory and Practice of Technical Writing by Samuel Chandler Earle

The Theory and Practice of Technical Writing

bySamuel Chandler Earle

Paperback | January 8, 2012

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This historic book may have numerous typos, missing text, images, or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1911. Not illustrated. Excerpt: ... APPENDIX ILLUSTRATIVE EXAMPLES OF TECHNICAL WRITING 1 I The Transit (A portion of § 81 from "A Text-book of Plane Surveying," by William G. Raymond, C.E. Printed with the permission of the American Book Company.) 1. Description. The instrument most used by surveyors and engineers for measuring horizontal angles, and, with certain attachments, for measuring vertical angles and distance, and for leveling, is called a transit. 2. The transit consists of a telescope attached to a pointer which may be moved around a graduated circle. There are suitable attachments for controlling the motion of the telescope and the pointer, and for enabling the graduated circle to be made horizontal. The pointer may be clamped to the graduated circle, and they may be revolved together. If this is done, and the telescope is pointed to a given object, and the graduated circle is clamped so that it will not revolve, and if the pointer is then undamped from the circle, the pointer and telescope may be turned together till the telescope points to a second object. The number of degrees of the circle over which the pointer has passed will be the angle subtended, at the point where the transit is placed, by the two objects seen through the telescope. 3. The pointer is the zero mark of a vernier. There are usually two double verniers placed 180° apart. 4. In the transit shown in Fig. 46, T is the telescope, which may, by means of the horizontal axis A, be revolved in a vertical plane. 5. The horizontal axis rests in bearings at the top of the 1 See § 184. standards X, which are rigidly attached to the circular plate that carries the vernier V. 6. On this plate are set two level tubes which, when adjusted to be parallel to the plate, will show whether the plate is level...
Title:The Theory and Practice of Technical WritingFormat:PaperbackDimensions:92 pages, 9.69 × 7.44 × 0.19 inPublished:January 8, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217374514

ISBN - 13:9780217374514